[INFO] updating cached repository https://github.com/foobert/rust-test
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7b0c839b2916e4da1fc61735c89e6747dd3eca92
[INFO] testing foobert/rust-test against try#41997647ba6a77908f6ef64401414feb00bccf16 for pr-71274
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffoobert%2Frust-test" "/workspace/builds/worker-14/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/foobert/rust-test on toolchain 41997647ba6a77908f6ef64401414feb00bccf16
[INFO] running `"/workspace/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/foobert/rust-test
[INFO] finished tweaking git repo https://github.com/foobert/rust-test
[INFO] tweaked toml for git repo https://github.com/foobert/rust-test written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/foobert/rust-test already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] abb508a7e387b0706ce99464f8550a706cc1ba19c0ddf1003a5e7c59b2f0710d
[INFO] running `"docker" "start" "-a" "abb508a7e387b0706ce99464f8550a706cc1ba19c0ddf1003a5e7c59b2f0710d"`
[INFO] [stderr]    Compiling libc v0.2.17
[INFO] [stderr]    Compiling begw v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `mosq`
[INFO] [stderr]   --> src/main.rs:30:22
[INFO] [stderr]    |
[INFO] [stderr] 30 | extern fn on_message(mosq: *const Mosquitto, obj: *const libc::c_void, message: *mut MosquittoMessage) {
[INFO] [stderr]    |                      ^^^^ help: if this is intentional, prefix it with an underscore: `_mosq`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `obj`
[INFO] [stderr]   --> src/main.rs:30:46
[INFO] [stderr]    |
[INFO] [stderr] 30 | extern fn on_message(mosq: *const Mosquitto, obj: *const libc::c_void, message: *mut MosquittoMessage) {
[INFO] [stderr]    |                                              ^^^ help: if this is intentional, prefix it with an underscore: `_obj`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:34:13
[INFO] [stderr]    |
[INFO] [stderr] 34 |         let mut t = m.topic;
[INFO] [stderr]    |             ----^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error: linking with `cc` failed: exit code: 1
[INFO] [stderr]   |
[INFO] [stderr]   = note: "cc" "-Wl,--as-needed" "-Wl,-z,noexecstack" "-m64" "-L" "/opt/rustwide/rustup-home/toolchains/41997647ba6a77908f6ef64401414feb00bccf16/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/rustwide/target/debug/deps/begw-d5def737abcf5d02.begw.6m27rc8b-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/begw-d5def737abcf5d02.begw.6m27rc8b-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/begw-d5def737abcf5d02.begw.6m27rc8b-cgu.10.rcgu.o" "/opt/rustwide/target/debug/deps/begw-d5def737abcf5d02.begw.6m27rc8b-cgu.11.rcgu.o" "/opt/rustwide/target/debug/deps/begw-d5def737abcf5d02.begw.6m27rc8b-cgu.12.rcgu.o" "/opt/rustwide/target/debug/deps/begw-d5def737abcf5d02.begw.6m27rc8b-cgu.13.rcgu.o" "/opt/rustwide/target/debug/deps/begw-d5def737abcf5d02.begw.6m27rc8b-cgu.14.rcgu.o" "/opt/rustwide/target/debug/deps/begw-d5def737abcf5d02.begw.6m27rc8b-cgu.15.rcgu.o" "/opt/rustwide/target/debug/deps/begw-d5def737abcf5d02.begw.6m27rc8b-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/begw-d5def737abcf5d02.begw.6m27rc8b-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/begw-d5def737abcf5d02.begw.6m27rc8b-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/begw-d5def737abcf5d02.begw.6m27rc8b-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/begw-d5def737abcf5d02.begw.6m27rc8b-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/begw-d5def737abcf5d02.begw.6m27rc8b-cgu.7.rcgu.o" "/opt/rustwide/target/debug/deps/begw-d5def737abcf5d02.begw.6m27rc8b-cgu.8.rcgu.o" "/opt/rustwide/target/debug/deps/begw-d5def737abcf5d02.begw.6m27rc8b-cgu.9.rcgu.o" "-o" "/opt/rustwide/target/debug/deps/begw-d5def737abcf5d02" "/opt/rustwide/target/debug/deps/begw-d5def737abcf5d02.2d547axu2ifv2pj9.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/rustup-home/toolchains/41997647ba6a77908f6ef64401414feb00bccf16/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-lmosquitto" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/liblibc-4e2d1f63550948da.rlib" "-Wl,--start-group" "/opt/rustwide/rustup-home/toolchains/41997647ba6a77908f6ef64401414feb00bccf16/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-62f93208e14fa8f0.rlib" "/opt/rustwide/rustup-home/toolchains/41997647ba6a77908f6ef64401414feb00bccf16/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-b2c4dbe979cef5e2.rlib" "/opt/rustwide/rustup-home/toolchains/41997647ba6a77908f6ef64401414feb00bccf16/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-8b9b66cb3e9f891d.rlib" "/opt/rustwide/rustup-home/toolchains/41997647ba6a77908f6ef64401414feb00bccf16/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-5998b08bf29f56ac.rlib" "/opt/rustwide/rustup-home/toolchains/41997647ba6a77908f6ef64401414feb00bccf16/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace-efd1670396ccb585.rlib" "/opt/rustwide/rustup-home/toolchains/41997647ba6a77908f6ef64401414feb00bccf16/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace_sys-6435b9209e888961.rlib" "/opt/rustwide/rustup-home/toolchains/41997647ba6a77908f6ef64401414feb00bccf16/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-866e5dfb603b34d2.rlib" "/opt/rustwide/rustup-home/toolchains/41997647ba6a77908f6ef64401414feb00bccf16/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-75eac3089695b3b4.rlib" "/opt/rustwide/rustup-home/toolchains/41997647ba6a77908f6ef64401414feb00bccf16/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-35744537b4825584.rlib" "/opt/rustwide/rustup-home/toolchains/41997647ba6a77908f6ef64401414feb00bccf16/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-f7ee5081d96fb2cd.rlib" "/opt/rustwide/rustup-home/toolchains/41997647ba6a77908f6ef64401414feb00bccf16/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-5b28479cb639d76c.rlib" "/opt/rustwide/rustup-home/toolchains/41997647ba6a77908f6ef64401414feb00bccf16/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-f827473dd3b319fa.rlib" "/opt/rustwide/rustup-home/toolchains/41997647ba6a77908f6ef64401414feb00bccf16/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-53f9c299c549c6a9.rlib" "-Wl,--end-group" "/opt/rustwide/rustup-home/toolchains/41997647ba6a77908f6ef64401414feb00bccf16/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-44132fbb3fcc18d3.rlib" "-Wl,-Bdynamic" "-lutil" "-ldl" "-lrt" "-lpthread" "-lgcc_s" "-lc" "-lm" "-lrt" "-lpthread" "-lutil" "-ldl" "-lutil"
[INFO] [stderr]   = note: /usr/bin/ld: cannot find -lmosquitto
[INFO] [stderr]           collect2: error: ld returned 1 exit status
[INFO] [stderr]           
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error; 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `begw`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "abb508a7e387b0706ce99464f8550a706cc1ba19c0ddf1003a5e7c59b2f0710d"`
[INFO] running `"docker" "rm" "-f" "abb508a7e387b0706ce99464f8550a706cc1ba19c0ddf1003a5e7c59b2f0710d"`
[INFO] [stdout] abb508a7e387b0706ce99464f8550a706cc1ba19c0ddf1003a5e7c59b2f0710d